potentially huge implications. president obama said a strong cooperative relationship with china was key. meanwhile, the president has driven his country hard since becoming leader two years ago pushing rapid development and economic growth while engaging in territorial disputes with neighbors like japan. where does china see itself, it's future and how might its relationship with the u.s. shape that vision? still with us, professor of political science at the university of chicago, and with me on set, senior fellow at the brookings institute. thanks for being here. >> a pleasure to be here. >> the trip yielded a number of things, the visa agreement, lower tariffs between the two countries. what could this mean moving forward in terms of the relationship between the two countries. >> i think the headline on this visit is the climate agreement despite the conversation you had with the other two guests.